Download Respiratory Study Guide

Teacher Key
Respiratory Study Guide
The air we breathe contains __21%_ oxygen and 78% nitrogen.
The waste gas from our cells is ___CO2__.
Another name for the voice box is the ___larynx____.
The ___cilia___ are small hairs that help clean the air we breathe.
The tube that takes air to the lungs is the ___trachea__ (windpipe).
Tubes that branch off the windpipe are the ___bronchi_____.
The __epiglottis___ is a flap of tissue that covers the windpipe when we swallow.
Tiny air sacs in our lungs are the ___alveoli___.
A wall of muscle at the bottom of our chest cavity is the ___diaphragm____.
The back of the throat is called the ____pharynx___.
___Pneumonia___ is an infection of the lungs where fluid builds up.
Infection of the bronchial tubes is ___bronchitis___.
When air passages swell and breathing is difficult is called _asthma__.(allergy)
__Smoking__ is the number one preventable cause of respiratory problems.
__Emphysema__ is when the alveoli loose their ability to expand and contract.
The most important gas that we need to live is _ oxygen___.
CO2
cilia
21
asthma
bronchi
trachea
alveoli
larynx
epiglottis
bronchitis
smoking
pharynx
emphysema
pneumonia
diaphragm
oxygen
Teacher Key
The following sentences describe the path of air through the respiratory system.
Write a 1 next to the sentence that describes what happens first. Continue until all
sentences are numbered.
__6__ Red blood cells carry oxygen to all your other cells
__2__ Air enters your trachea
__5__ Air passes from the alveoli into the capillaries
__1__ Air enters your body through your nose and mouth
__7__ Carbon dioxide moves from capillaries in the alveoli and into the lungs
__8__ Carbon dioxide leaves your body
__4__ Air flows into the air sacs (alveoli) in your lungs
__3__ Air passes into your lungs through the bronchial tubes
16. right lung
Teacher Key
1. What is the function of your respiratory system? The function of the respiratory system is the
exchange of oxygen and carbon dioxide.
2. Explain the function of the alveoli? The alveoli are air sacs where oxygen and carbon dioxide
are exchanged in the lungs.
3. How is the air you breathe cleaned by the respiratory system? The air is cleaned by the nose
hairs, cilia, and mucus that line the respiratory system.
4. Reference back to your guided notes and explain how carbon dioxide and oxygen are
exchanged in the lungs?
The air you breathe in fills up the alveoli in the lungs. Oxygen passes from the alveoli into the
capillaries. RBC in the capillaries picks up the oxygen and release carbon dioxide. Carbon
dioxide, a waste product of the cells, is then exhaled with the air from the lungs. Blood then
takes the oxygen rich blood to the rest of your body cells.